As part of my project, I am developing a sample application that connects to a websocket server in Ionic 2 using Typescript. You can find the repository here.
The main requirement is to establish the websocket connection when the application starts up.
To create the connection, I am utilizing the angular2-websocket library.
Here are some helpful references:
However, I encountered an error message stating: "Cannot resolve all parameters for '$WebSocket'(String, Array, ?). Make sure that all the parameters are decorated with Inject or have valid type annotations and that '$WebSocket' is decorated with Injectable."
Below is a snippet of the code:
import {App, Platform} from 'ionic-framework/ionic';
import {TabsPage} from './pages/tabs/tabs';
import {ConnectionService} from './framework/connection/connection-service'
import {$WebSocket} from 'angular2-websocket/angular2-websocket';
import {bootstrap} from 'angular2/platform/browser';
// Other imports...
@App({
template: '<ion-nav [root]="rootPage"></ion-nav>',
config: {}
})
export class MyApp {
// Constructor...
}
bootstrap(MyApp, [$WebSocket, ConnectionService]);
import {Injectable, Component, Inject} from 'angular2/core';
import {$WebSocket} from 'angular2-websocket/angular2-websocket';
import {bootstrap} from 'angular2/platform/browser';
@Injectable()
export class ConnectionService {
private _status: number;
// Constructor and other methods...
}
bootstrap(ConnectionService, [$WebSocket]);